Interestingly enough, that achievement list - showing an "I Am The Knight" achievement (worth 70gs), has been revealed to be a "PermaDeath" based achievement. Meaning you'll need to get through the whole game with one life, no continues.

Kotaku expands:

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"I am the Night" won't be available until after a player finishes the main story arc—which producer Guillaume Voghel said will take about 12 hours—and then again through the new-game-plus mode the game is bringing back. "I am the Night" will feature gamesaves, but will have only one life in it.